use chrono::{DateTime, Local};
use handlebars::handlebars_helper;
use rocket_dyn_templates::Engines;

pub fn register_helpers(engines: &mut Engines) {
    handlebars_helper!(pretty_datetime: |dt: str| {
        let dt: DateTime<Local> = dt.parse().unwrap();
        format!("{}", dt.format("%Y-%m-%d %H:%M"))
    });
    engines
        .handlebars
        .register_helper("pretty_datetime", Box::new(pretty_datetime));

    handlebars_helper!(pretty_compact_seconds: |secs: u64| {
        let hours = secs / 60 / 60;
        let minutes = secs / 60 % 60;
        if hours == 0 {
            format!("{}m", minutes)
        } else {
            format!("{}h", hours)
        }
    });
    engines
        .handlebars
        .register_helper("pretty_compact_seconds", Box::new(pretty_compact_seconds));

    handlebars_helper!(pretty_seconds: |secs: u64| {
        let hours = secs / 60 / 60;
        let minutes = secs / 60 % 60;
        if hours == 0 {
            format!("{}m", minutes)
        } else if minutes == 0 {
            format!("{}h", hours)
        } else {
            format!("{}h {}m", hours, minutes)
        }
    });
    engines
        .handlebars
        .register_helper("pretty_seconds", Box::new(pretty_seconds));
}